In case someone here is interested.
Characters: - OC or Canon - If OC, have at least one reference picture of both characters - Earth pony/Unicorn/Pegasus/Alicorn/Bat pony/Kirin! - Head shape can't be changed - No changeling, hippogriff or other race that would require much alteration - No overly complicated stuff, like Luna's or Celetia's mane.